Mucilage-stamp



W. B. GIBBS. MUCILAGB STAMP.

No. 587,726. Patented Aug. 10,1897.

(No Model'.)

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UNITED STATES PATENT OEEIcE. ,y

W'ILLIAM E. GIBBS, OF VVESTFILD, MASSACHUSETTS.

MllJClLAGE-STAIVI P.

SPECIFICATION forming part of Letters Patent No. 587,726, dated August 10, 1897'.

Application filed March Il, 1897. Serial No. 626,927. (No model.)

and at the same time laying the mucilage on smoothly and evenly and in just sufficient quantity to prevent it from unduly spreading.

A further .object is to provide a device which will retain a supply of mucilage without allowing the mucilage to gum or harden, the stamp being so constructed that the reservoir for containing the mucilage may be readily and quickly filled with afresh supply.

A still further object is to provide a stamp in which the sticky parts are thoroughly protected when not in use.

A practical embodiment of my invention is represented in the accompanying drawings, in which- Figure l isafront View of the stamp. Fig. 2 is a side view of the same. Fig. 3 is a vertical central section in the plane of the line 3 3 of Fig. l, and Fig. 4 is a similar section showing the position of the parts when the stamp is being used for applyingmucilage to a surface.

The supporting-stand is denoted as a whole by A, its neck through which the reciprocating plunger slides by a, and its legs by a. The legs are preferably spread at their bases, as shown at a2, to form a firm support for the stand. The vertically-reciprocating plunger consists of a head B and a shank C, which is provided with a suitable operating knob or handle D.

The neck a is provided with a bore as, through which the shank C of the plunger slides. The shank C is tted to the bore a3 of the neck a for a portion of the length of the shank near its upper end. The balance of the shank C is reduced in diameter, as shown at c,a shoulder c being thereby formed, between which shoulder and an inwardly-projecting flange a4 on the neck a is interposed a spring E, which tends to return the shank to the limit of its upward movement when it has been depressed. The shank Cis of tubular form, its bore being denoted by c2.

The head of the iiange is hollow, thereby forming a reservoir h for the reception Vof the mucilage. This reservoir has a feather-andgroove connection with the legs a' of the support, as shown at a4, whereby it is guided in its upward and downward sliding movements.

The reservoir or head of the iiange is connected with the stem of shank C by means of the coupling-nut F,which has a screwthreaded engagement with the exterior of the lower end of the shank C and a screwthreaded engagement with the interior of the top of the head D. This coupling-nut is provided with suitable openings f, whereby communication is established between the interior of the reservoir and the interior of the shank.

A discharge-opening h is formed in the bottom of the reservoir B, and beneath the said opening is secured in any suitable manner a mucilage-distributing pad G,which is of some porous matcrial-such, for instance, as felt or sponge. The mucilage-discharge opening h' is kept normally closed when the stamp is not in use by means of a valve H, which is yieldingly held in its seat by means of aspring h, surrounding its upwardly-extending stem h' and extending between the head of the valve and the coupling-nut F. The coupling-nut F is provided with a suitable guide f' for the stem h of the valve. The valve H is further provided with a downwardly-extended stem h2, which extends through the distributingpad G and projects a slight distance below the same, so that when the plunger is forced down thesaid downwardly-extended stem h2 will be engaged by the surface to which the mucilage is to be applied and the valve H thereby raised away from its seat, allowing the mucilage to iiow through the opening b' and permeate the porous pad G. l

A swinging protecting pan or cap I is hinged at i to suitable lugs a5 on the legs a' of the supporting-stand in position to cover the pad G when the parts are in their normal position. The pan I is connected by means of suitable straps e" with the sides of the reservoir B in such a manner that the downward movement of the said reservoir will swing the cap or pan outwardly away from the line of IOO ' stamp.

movement of the said reservoir to permit the pad G to engage the surface beneath the These straps are so connected that they will cause the pan I to automatically return to its protecting position When the reservoir returns to its normal position.

An air-vent tube J extends through the bore c2 of the shank C and is secured at its lower end to the guide f on the nut F. The upper end ofl the vent-tube J preferably eX- tends beyond the top of the shank C, as shown at j.

The operating handle or knob D is removably secured to the top of the shank C. In. the present instance it is shown as having a screw-threaded engagement therewith.

When it is desiredI to ll thereservoir B, the handle D isremoved and the mucilageis poured into the bore c2 of the shank C. It will runv fromV there through the openings f inthe nut F into the interior b ofl the. reservoir. The air will escape freely throughthe.- vent-tube J, thereby permitting the reservoir to be rapidly filled. When the reservoir h as been filled, the handle D is again engaged. with the-shank C.

When it is desired togum asurface, it is placed beneath the stamp andi the reservoir is forced downwardly by depressing the ha-ndle D. Thisedown ward movement of the-resv ervoir will swing. theiprotectingfcover Laway, as has been hereinbefore described, kthe valve Hf will be raised from its seat, the mucilage y support, a-reciprocatingplungerfitztedrtosslide. therein, thehead of the said plunger forming areservoir for the mucilage, a mucilage-dis.- ytributing pad carried by the head inposition Will fill the pad G, and from thence will be applied to the surface.

The stamp-as above describedisvery neat4 and clean and will keep the mucilage from gumming and at all times ready. for imme-f' diate use.

Itisfevident that slight changes may be resorted to in the construction and arrangement of the several parts without departing from the spirit and scope of my'invention.

vHence I' do'not wish to limit myself' strictly to-the structure hereinset forth; but

that I- claimf is-` 1. A mucilage-stampy comprisinga suitable support,l a reciprocating, plunger mounted therein, the said plunger comprisinga reser.- voir-head, a shank connected therewith, a. mucilage-distributing pad carried by the j 2. A mucilage-stamp comprising asuitable support, a reciprocating plunger mounted to slide therein, the head of the said plunger forming a mucilage-reservoir, a mucilage-distributing pad carried by the plunger-head, a

mu cilage-discharge outlet in the head through which the mucilage is fed to the pad, a valve in' position to normally close the said outlet and a downwardly-extending stern carried by the valve in position to be engaged'y bythe surfaoeto be mucilagedas the'plunger :is-depressed for raising the said valvefaway from vits seat thereby permitting aportion of, the

mucilage to pass through the discharge-ou tlet into the pad, substantially as set forth.y

3; A- mucilage-stamp comprising. asuitable support',` a reciprocating plunger mounted'tof slide therein, the said. plunger` comprising, a: j tubular shank and a hollow head communicating with thevinterior of theshank,.anA air-- vent tube extending` from the reservoir-head'` upwardlythroughfthe shank and a mucilage- Vdistributing padcarried by. said-headdn position to'receive a supplyA of mucilage from Y the interior of the same substantially. as set forth.

4E. A mucilage-stampcomprising a-suitable to receive mucilage therefrom, and a'swinging protecting-pan mountedV upon the-sup.-

port having a connection with the headof theplunger whereby the reciprocating movement =of the plunger is caused toswinglthev pan into positiontol cover the pad When-the plunger isslidin. one directionand away fromthe; said padfwhenthe plunger is slid inthe opf posite direction, substantially as set forth.

VILLIAM E. GlIBBS.V 

